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Thread: P1000 fault won’t reset.

  1. #11
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    Yes, I agree the code doesn’t match the condition. If I had access to another device I would use it.
    Do you know which of the Nanocom inputs measures that sensor? Because all of them seem okay.
    2002 D2 4.6L V8 Auto SLS+2" ACE CDL Truetrac(F) Nanocom(V8 only)

  2. #12
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    nanocom does not display CMP input, you need oscilloscope for that, 12V amplitude square wave is OK, example: YouTube
    Discovery Td5 (2000), manual, tuned

  3. #13
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    I’m pretty sure my Fluke process meter will be able to read the frequency at that amplitude. I’ll give it a try on the weekend. Cheers.
    2002 D2 4.6L V8 Auto SLS+2" ACE CDL Truetrac(F) Nanocom(V8 only)

  4. #14
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    P1000 fault won’t reset.

    Just a thought. Would a camshaft from a 4.6L GEMS motor have the same lobes on the end of it as a THOR camshaft does, for the THOR sensor to pickup?
    In other words, should I have swapped camshafts when doing the conversion?
    2002 D2 4.6L V8 Auto SLS+2" ACE CDL Truetrac(F) Nanocom(V8 only)

  5. #15
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    What an interesting question,, no real reason for a gems motor to have them..

    and,, just to add to the pile,, my OBD2 code thingo reads P1000 as "System readiness test not complete"


    and if the gems cam did not have the lobes,, would it ever have started?
    "How long since you've visited The Good Oil?"

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  6. #16
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    Good point about it starting. It ran beautifully for 10 months, up until the last few kilometres of my last trip.
    I tried the adaptive reset, perhaps that will make a difference.
    2002 D2 4.6L V8 Auto SLS+2" ACE CDL Truetrac(F) Nanocom(V8 only)

  7. #17
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    I’m currently working out the same p1000 problem as you. I’ve stumbled across this thread and figured I’d chime in because I’ve been having a hard time finding anyone who has finalized a solution to this.

    Here are my details:
    2002 4.0 v8 engine
    Full rebuild done by some other landrover enthusiasts and myself.

    Similar to you when I started my truck it ran great but always showed the p1000 code with my nanocom. After researching I found this:

    The vehicle is new from the factory.
    Battery or Powertrain Control Module (PCM) had recently been disconnected.
    An OBD monitor failure occurred before completion of an OBD drive cycle.
    PCM Diagnostic Trouble Codes (DTC) have recently been cleared with a scan tool.

    This led me to believe that because I swapped all the computers from the rebuilt engines truck to mine and learned the computers with the nanocom that it was a normal thing and would go away with time and a full drive cycle. I even rest the adaptive setting as you did. I now have 1600km on the new engine and it has yet to go away.

    I too noticed a misfire on my #6 cylinder but not enough to register a hard code. Just while viewing misfires with the nanocom. I did show a few on cylinders 1 2 and 5 but not as many as I saw on 6. So this made me think coil packs as well but I put in new ones. Not going to rule them out yet though.

    With all this said I’m thinking more along the lines back to what the nanocom is saying. Maybe our cam position sensors are bad, even though it’s unlikely. I do know when you first start a rebuilt engine you are supposed to do the initial cranks with the crankshaft position sensor unplugged, which in all the excitement I forgot to do. I’m wondering if because of this there was an error registering in timing and set a hard code. Curious to see if maybe you started yours without the crankshaft position sensor unplugged too?

    I’m going to keep troubleshooting and see what I come up with, if I get any results I’ll be sure to post them here in this thread.

  8. #18
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    For the first time in about 6 weeks I took the D2 for another run and the misfire (on cylinder 1 and 6) is still there. I was hoping that by ignoring it for a few weeks the problem would go away.
    The motor seems to idle well, but once the go pedal is pressed it runs terribly.
    The Nanocom fault P1000 has returned after clearing it.
    As I mentioned earlier the motor had run perfectly for months before this suddenly developed at the end of a short easy trip.
    The flywheel sensor an coil packs are relatively new, so should be okay.
    Time to get the oscilloscope out.
    I must admit, after all the work I have put into this motor, I'm having trouble getting motivated.
    2002 D2 4.6L V8 Auto SLS+2" ACE CDL Truetrac(F) Nanocom(V8 only)

  9. #19
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    Quote Originally Posted by DennisK View Post
    I do know when you first start a rebuilt engine you are supposed to do the initial cranks with the crankshaft position sensor unplugged, which in all the excitement I forgot to do.
    Mine had ran perfectly for a year, so this wouldn't be an issue in my case.
    Have you had any luck with yours?
    2002 D2 4.6L V8 Auto SLS+2" ACE CDL Truetrac(F) Nanocom(V8 only)

  10. #20
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    Sorted, finally!
    Problem was either a dodgy lead or a coil pack. I’m not sure which because I changed them both together as I didn’t want to access the coil packs twice in one day.
    I’m not sure why the P1000 fault would come up though, as it did in my first post.
    Runs beautifully now.
    2002 D2 4.6L V8 Auto SLS+2" ACE CDL Truetrac(F) Nanocom(V8 only)

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